Showing papers on "IP Multimedia Subsystem published in 1990"
01 Sep 1990
TL;DR: In this paper, the authors focus on applications that bring subject matter into a meeting, not on applications-such as voting or brainstorming tools-that aid the meeting process itself, and attempt both to support single-user applications running in the shared environment, and to provide a base for developing inherently shared applications.
Abstract: Computer teleconferencing allows individuals scattered near and far to collaborate in writing a paper, negotiate over a budget spreadsheet, or cooperate in debugging a program. Our project focuses on applications that bring subject matter into a meeting, not on applications-such as voting or brainstorming tools-that aid the meeting process itself. We attempt both to support single-user applications running in the shared environment, and to provide a base for developing inherently shared applications.
416 citations
TL;DR: The software architecture of a multimedia workstation connected to an experimental packet switching network which is capable of switching voice, data, and video simultaneously is described.
Abstract: The software architecture of a multimedia workstation connected to an experimental packet switching network which is capable of switching voice, data, and video simultaneously is described. The user of a multimedia workstation may engage in several multimedia calls, each using multiple information streams consisting of voice, data, and images. The network interface software in the workstation maintains the temporal relationship among a given call's information streams. For each call, the network interface provides a multiple information channel interface to upper layer software supporting the notion of a multimedia virtual circuit. A connector mechanism is provided to control the information exchange among the network interface, the various voice, data, and image peripherals, and the computer programs used in a multimedia application. These information sources and sinks share a common abstraction called active devices. >
101 citations
IBM1
TL;DR: In this paper an interface is outlined suitable for conveying the different application requirements to the communication subsystem, here called the transport system.
75 citations
02 Dec 1990
TL;DR: Handling multimedia requests, distributed computing and shared resources, media conversion, and issues of network design are discussed.
Abstract: Leading corporations and federal agencies are beginning to recognize the great potential of multimedia applications. IBM and Apple have announced major commitments to develop equipment and software for multimedia applications. Current trends in multimedia applications are examined. A summary of the network implications in view of broadband ISDN (B-ISDN) is included. Multimedia database systems; audio, video, and graphics multimedia mail; teleconferencing; video extension to the X window (VEX); and an audio server under development at Olivetti Research Center (VOX) are outlined. Handling multimedia requests, distributed computing and shared resources, media conversion, and issues of network design are discussed. >
28 citations
IBM1
TL;DR: It is shown that building multimedia communication systems (MMCSs) requires much more than the presence of a high-bandwidth network and some other practical problems that need to be solved before multimedia communication becomes the major user of high bandwidth networks.
Abstract: Multimedia communications are presented as a major application of broadband digital networks. It is shown that building multimedia communication systems (MMCSs) requires much more than the presence of a high-bandwidth network. In order to study how broadband communication systems will deal with multimedia documents, the structure and characteristics of these documents must be first examined in detail. An overview of the different techniques used to represent multimedia information is given. The design requirements and features of MMCSs and the various issues involved in their implementation are discussed in the light of a research prototype as well as of other experiences reported in the literature. Standardization will play an important role in making MMCSs usable. Efforts in this area are discussed, as well as some other practical problems that need to be solved before multimedia communication becomes the major user of high bandwidth networks. >
6 citations